Lost your car key or need to program a new remote for your 2005 Toyota Corolla? You can program a new door control transmitter by yourself following a specific procedure. This guide will walk you through the process of registering a new key fob for your 2005 Toyota Corolla, allowing you to control your car’s door locks remotely. There are different modes for registration, depending on your situation: adding a key, rewriting all keys, confirming registered keys, or prohibiting all keys.
Before you begin, ensure your vehicle is in the correct state:
- No key is in the ignition key cylinder.
- The driver’s door is open, and all other doors are closed.
- The driver’s door is unlocked.
Now, you need to select the desired programming mode. Follow these steps carefully to enter the correct mode for your needs.
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Insert and remove your existing key (or a blank key if you’ve lost all keys) from the ignition switch twice within 5 seconds.
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Within 40 seconds of the previous step, close and open the driver’s door twice. Then, insert the key into the ignition cylinder and remove it.
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Within 40 seconds of the previous step, close and open the driver’s door twice again. Then, insert the key into the ignition cylinder and leave it in.
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Turn the ignition switch from the LOCK position to the ON position and back to LOCK at approximately 1-second intervals. Repeat this ON-LOCK cycle a specific number of times to select your desired mode. Refer to the table below to determine how many cycles to use for each mode:
- Add Mode (to register additional keys): Turn ON-LOCK 1 time.
- Rewrite Mode (to replace all existing keys with new ones): Turn ON-LOCK 2 times.
- Confirmation Mode (to check how many keys are registered): Turn ON-LOCK 3 times.
- Prohibition Mode (to erase all keys and disable remote function): Turn ON-LOCK 5 times.
NOTE: If you cycle the ignition ON-LOCK 0, 4, or 6 or more times, the system will not respond, and no mode will be selected.
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After selecting a mode with the ignition switch, the power door locks will automatically cycle (LOCK-UNLOCK) within 3 seconds to confirm the selected mode. The number of LOCK-UNLOCK cycles indicates the mode you’ve entered, as shown in the table below.
Understanding the Confirmation Mode:
In confirmation mode, the door locks will cycle LOCK-UNLOCK once for each key fob already registered to your 2005 Toyota Corolla. For example, if two key fobs are currently programmed, you will see two LOCK-UNLOCK cycles. If no keys are registered, the locks will cycle five times. Confirmation mode and prohibition mode will end the programming procedure once the LOCK-UNLOCK response is given.
Registering Your New Key Fob (Add Mode or Rewrite Mode):
If you have selected either Add Mode or Rewrite Mode, you can now register your new key fob.
- Within 40 seconds of the door locks confirming the Add or Rewrite mode, press and hold both the LOCK and UNLOCK buttons on your new transmitter simultaneously for 1 to 1.5 seconds. Then, within 3 seconds of releasing both buttons, press and hold either the LOCK or UNLOCK button for more than 1 second.
- If the key fob registration is successful, the door locks will cycle LOCK-UNLOCK once within 3 seconds after you release the button. If the door locks cycle twice, the registration has failed. In case of failure, repeat the entire programming procedure from the beginning.
- If you need to register additional key fobs, repeat step 1 within 40 seconds of the successful registration of the previous key fob.
Important Hints for Successful Programming:
- You can register up to 4 key fobs for your 2005 Toyota Corolla.
- The programming mode will automatically end if any of the following occur:
- 40 seconds have passed since the last successful key fob registration.
- Any door is opened.
- The key is inserted into the ignition cylinder.
- 4 key fobs have been successfully registered.
By following these steps, you should be able to successfully program a new key fob for your 2005 Toyota Corolla and regain remote access to your vehicle’s door locks.
